CN209943546U - Natural gas valve with safety relief mechanism - Google Patents

Abstract

The utility model discloses a natural gas valve with safe relief mechanism belongs to the natural gas valve field, including the valve shell, one side of valve shell is connected with the air inlet, and one side that the air inlet was kept away from to the valve shell is connected with the gas outlet, the internal connection of valve shell has the connecting rod, and the bottom of connecting rod is connected with sealed piece, the outside of connecting rod is connected with the limiting plate, and the outside of connecting rod is located the top of limiting plate and has cup jointed the spring, the top of connecting rod runs through to the outside of valve shell and is connected with the connecting plate, the handle has been cup jointed to the outside of connecting rod is located the bottom of connecting plate. The utility model discloses a be provided with connecting rod, sealed piece, screw hole and bolt, when the pipeline internal gas pressure was too high, rise and loosen the bolt through the sealed piece of control, make the natural gas in the trachea can follow the threaded hole and release, reduced the probability that the pipeline damaged, reduced the probability that natural gas leaked.

Description

A natural gas valve with safety relief mechanism

technical field

The utility model relates to the field of natural gas valves, in particular to a natural gas valve with a safety discharge mechanism.

Background technique

Natural gas valve is a new type of safety matching device for gas pipeline engineering. It is used to cut off, connect and adjust the gas in the pipeline. It has good control characteristics and closing sealing performance. It is suitable for city gas, liquefied petroleum gas and natural gas. , oxygen and other gas medium pipelines.

When the pressure in the natural gas pipeline is too high, the high pressure will easily damage the natural gas transmission system. The traditional natural gas valve is not equipped with a safety relief mechanism, so that the valve cannot discharge the natural gas in the pipeline, which increases the probability of pipeline damage. The probability of natural gas leakage is increased. The existing natural gas valve is a ball valve structure. The ball valve structure makes it difficult for the valve to accurately adjust the gas output, and the ball valve has poor sealing performance, which increases the probability of natural gas leakage. The existing natural gas valve transmission The rod is not provided with a sealing mechanism, so that natural gas is easy to leak from the connection between the transmission rod and the casing, which increases the probability of natural gas leakage and shortens the service life of the valve.

Utility model content

The purpose of this utility model is: in order to solve the problem that the traditional natural gas valve is not provided with a safety discharge mechanism, the existing natural gas valve is a ball valve structure, and the existing natural gas valve transmission rod is not provided with a sealing mechanism, and provides a safe discharge mechanism. Natural gas valve for relief mechanism.

In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a natural gas valve with a safety discharge mechanism, comprising a valve casing, one side of the valve casing is connected with an air inlet, and the valve casing is far away from the air inlet. The side is connected with an air outlet, the inside of the valve shell is connected with a connecting rod, and the bottom end of the connecting rod is connected with a sealing block, the outer side of the connecting rod is connected with a limit plate, and the outer side of the connecting rod is located at the top of the limit plate A spring is sleeved, and the top end of the connecting rod penetrates to the outside of the valve housing and is connected with a connecting plate. A gasket is connected directly below, and the bottom end of the valve shell is provided with a threaded hole, the inside of the threaded hole is connected with a bolt, and the side of the inside of the valve shell away from the gasket is connected with an isolation plate, and the inner part of the isolation plate is connected with an isolation plate. A transmission rod is connected, the bottom end of the valve casing is connected with a connecting block, the outer side of the transmission rod is connected with a second limit plate, and the top end of the transmission rod penetrates to the outer side of the valve casing and is connected with a runner handle, so The outer side of the transmission rod is located at the bottom end of the wheel handle and is connected with a support block.

Preferably, the outer side of the air inlet is provided with an external thread, and the outer side of the air outlet is provided with a clamping block.

Preferably, the bottom end of the handle is connected with a top block, and the handle and the valve housing are movably connected through the top block.

Preferably, the outer bottom end of the transmission rod is provided with an external thread, and the bottom end of the transmission rod penetrates into the interior of the connecting block, and the connecting block and the transmission rod are connected by threads.

Preferably, a sealing layer is connected to one end of the second limit plate close to the isolation plate, and the number of the second limit plates is two groups, and the two groups of the second limit plates are symmetrically arranged about the transverse center axis of the isolation plate .

Preferably, the support block is movably connected with the transmission rod, and the support block is welded with the valve housing.

Compared with the prior art, the beneficial effects of the present utility model are: the utility model is provided with a connecting rod, a sealing block, a threaded hole and a bolt, and when the air pressure in the pipeline is too high, the sealing block is controlled to rise and the bolts are loosened. The natural gas in the gas pipe can be discharged from the threaded hole, which reduces the probability of pipeline damage and the probability of natural gas leakage. There are two groups of spaces, and the precise adjustment of the gas output is realized by controlling the lifting and lowering of the pipe rod. This sealing structure improves the sealing performance of the valve and reduces the probability of natural gas leakage. The bottom end of the outer side of the transmission rod is provided with a thread , and the transmission rod and the connecting block at the bottom of the device are connected by threads, so that the natural gas is not easy to leak from the connection between the transmission rod and the casing, which reduces the probability of natural gas leakage and prolongs the service life of the valve.

Description of drawings

Fig. 1 is the sectional view of the utility model;

Fig. 2 is the handle structure schematic diagram of the utility model;

Figure 3 is a schematic diagram of the structure of the transmission rod of the present invention.

In the figure: 1, valve shell; 2, air inlet; 3, air outlet; 4, connecting rod; 5, limit plate; 6, spring; 7, connecting plate; 8, handle; 9, top block; 10, Sealing block; 11. Gasket; 12. Threaded hole; 13. Bolt; 14. Isolation plate; 15. Connecting block; 16. Transmission rod; 17. Second limit plate; 18. Wheel handle; 19. Support block .

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the implementations. example. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

Please refer to Figure 1-3, a natural gas valve with a safety relief mechanism, including a valve housing 1, one side of the valve housing 1 is connected with an air inlet 2, and the side of the valve housing 1 away from the air inlet 2 is connected with a Air outlet 3, the inside of the valve housing 1 is connected with a connecting rod 4, and the bottom end of the connecting rod 4 is connected with a sealing block 10, the outer side of the connecting rod 4 is connected with a limit plate 5, and the outer side of the connecting rod 4 is located at the limit plate 5 The top end of the connecting rod 4 is sleeved with a spring 6, the top end of the connecting rod 4 penetrates to the outside of the valve housing 1 and is connected with a connecting plate 7, the outer side of the connecting rod 4 is located at the bottom end of the connecting plate 7 and a handle 8 is sleeved, and the inside of the valve shell 1 is sleeved with a handle 8. A gasket 11 is connected directly below the sealing block 10, and the bottom end of the valve shell 1 is provided with a threaded hole 12, the inside of the threaded hole 12 is connected with a bolt 13, and the inside of the valve shell 1 is connected with a side away from the gasket 11. The isolation plate 14 is connected with a transmission rod 16 inside the isolation plate 14, the bottom end of the valve housing 1 is connected with a connecting block 15, the outer side of the transmission rod 16 is connected with a second limit plate 17, and the top of the transmission rod 16 penetrates to the A wheel handle 18 is connected to the outer side of the valve housing 1 , and a support block 19 is connected to the outer side of the transmission rod 16 at the bottom end of the wheel handle 18 .

In this implementation: by being provided with two sets of second limit plates 17, when the transmission rod 16 rotates clockwise or counterclockwise, the second limit plates 17 can fit the isolation plate 14, and the inside of the valve can be sealed, The probability of valve leakage caused by screwing in the wrong direction during use is reduced, and the safety factor is enhanced.

Please refer to Fig. 1. The outer side of the air inlet 2 is provided with an external thread, and the outer side of the air outlet 3 is provided with a clamping block, which facilitates the installation of the device and the natural gas pipeline, and facilitates the installation of the device and the gas supply pipe of the natural gas equipment. The outer side of the transmission rod 16 The bottom end of the valve is provided with an external thread, and the bottom end of the transmission rod 16 penetrates into the interior of the connecting block 15, and the connecting block 15 and the transmission rod 16 are threadedly connected, so that the gap between the transmission rod 16 and the valve housing 1 is reduced, enhancing the The sealing of the device, the support block 19 is movably connected with the transmission rod 16, and the support block 19 is welded with the valve housing 1, which reduces the probability of damage to the transmission rod 16 and the damage to the support block 19.

Please refer to FIG. 2, the bottom end of the handle 8 is connected with a top block 9, and the handle 8 and the valve housing 1 are movably connected through the top block 9, so that when the handle is tightly grasped, the side where the handle 8 and the connecting rod 4 are sleeved can be upward The movement reduces the difficulty of lifting the connecting rod 4 .

Please refer to FIG. 3 , one end of the second limiting plate 17 close to the isolation plate 14 is connected with a sealing layer, and the number of the second limiting plate 17 is two groups, and the two sets of the second limiting plate 17 are related to the lateral direction of the isolation plate 14 . The central axis is symmetrically arranged, so that the natural gas is not easy to pass through the connection between the second limiting plate 17 and the isolation plate 14, and the sealing performance of the device is enhanced.

Working principle: When in use, screw the air inlet 2 into the natural gas pipeline joint, so that the device is connected to the pipeline. At this time, the natural gas in the pipeline enters the device and is intercepted by the isolation plate 14, so that the natural gas is not easy to flow out from the gas outlet 3. At this time, the gas supply rubber tube of the natural gas equipment is clamped into the outside of the gas outlet 3, so that the installation of the device is completed. Turn the wheel handle 18, and the wheel handle 18 drives the transmission rod 16 to start to rotate. 15 is connected by threads, so the connection between the transmission rod 16 and the top end of the valve housing 1 has a strong sealing performance. At this time, the transmission rod 16 starts to rise under the action of the thread, so that the second limit plate 17 no longer fits the isolation plate 14. The natural gas at the top of the isolation plate 14 can flow to the bottom end of the isolation plate 14 through the through holes inside the isolation plate 14, and from the bottom end of the isolation plate 14 to the gas outlet 3, so as to realize the gas supply to the natural gas equipment. When the air pressure is too high, loosen the bolt 13 at the bottom end of the valve housing 1, and hold the handle 8 tightly, so that the handle 8 starts to lift the connecting rod 4 with the top block 9 as the center. The sealing block 10 starts to rise, so that the natural gas in the valve can flow out of the valve from the threaded hole 12, and the natural gas in the valve is discharged.

It will be apparent to those skilled in the art that the present invention is not limited to the details of the above-described exemplary embodiments, and that the present invention may be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments are to be considered in all respects as exemplary and not restrictive, and the scope of the present invention is defined by the appended claims rather than the foregoing description, and it is therefore intended that the All changes within the meaning and range of the required equivalents are embraced within the present invention. Any reference signs in the claims shall not be construed as limiting the involved claim.

Claims (6)

1. A natural gas valve with a safety relief mechanism, comprising a valve housing (1), characterized in that: one side of the valve housing (1) is connected with an air inlet (2), and the valve housing (1) is far away from An air outlet (3) is connected to one side of the air inlet (2), a connecting rod (4) is connected to the inside of the valve housing (1), and a sealing block (10) is connected to the bottom end of the connecting rod (4). , the outer side of the connecting rod (4) is connected to the limiting plate (5), and the outer side of the connecting rod (4) is located at the top of the limiting plate (5) and is sleeved with a spring (6), and the connecting rod (4) The top end of the connecting rod (4) penetrates to the outside of the valve housing (1) and is connected with a connecting plate (7). The inside of (1) is located directly below the sealing block (10) and is connected with a sealing gasket (11), and the bottom end of the valve housing (1) is provided with a threaded hole (12), and the inside of the threaded hole (12) is connected with a Bolts (13), an isolation plate (14) is connected to the inner side of the valve housing (1) away from the gasket (11), and a transmission rod (16) is connected to the interior of the isolation plate (14). The bottom end of the casing (1) is connected with a connecting block (15), the outer side of the transmission rod (16) is connected with a second limit plate (17), and the top end of the transmission rod (16) penetrates to the valve casing (1) A wheel handle (18) is connected to the outer side of the transmission rod (16), and a support block (19) is connected to the outer side of the transmission rod (16) at the bottom end of the wheel handle (18). 2. A natural gas valve with a safety relief mechanism according to claim 1, characterized in that: the outer side of the air inlet (2) is provided with an external thread, and the outer side of the air outlet (3) is provided with a card block. 3. A natural gas valve with a safety relief mechanism according to claim 1, characterized in that: the bottom end of the handle (8) is connected with a top block (9), and the handle (8) is connected to the valve shell ( 1) Actively connected through the top block (9). 4. A natural gas valve with a safety relief mechanism according to claim 1, characterized in that: the outer bottom end of the transmission rod (16) is provided with an external thread, and the bottom end of the transmission rod (16) penetrates through To the inside of the connecting block (15), the connecting block (15) is connected with the transmission rod (16) through threads. 5. A natural gas valve with a safety relief mechanism according to claim 1, characterized in that: one end of the second limiting plate (17) close to the isolation plate (14) is connected with a sealing layer, and the second limiting plate (17) is connected with a sealing layer. There are two sets of limit plates (17), and the two sets of second limit plates (17) are symmetrically arranged with respect to the transverse center axis of the isolation plate (14). 6. A natural gas valve with a safety relief mechanism according to claim 1, wherein the support block (19) is movably connected to the transmission rod (16), and the support block (19) is connected to the valve housing (19). 1) Welding.

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